<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        background-color: #333;
      }
    </style>
  </head>
  <body>
    <script>
      function request(url, callbackFn) {
        const results = [1, 2, 3, 4, 5];
        callbackFn(results);
      }

      const obj = {
        names: [],
        network: function () {
          request('url', (result) => {
            this.names = [].concat(result);
          });
        },
      };

      obj.network();
      console.log(obj.names);
    </script>
  </body>
</html>
